Panel mount connector reccomendation

Other Hardware General Electronics
5

wilykat:
3.5mm might get confused with audio port and anyone trying that is going to hear awful squeal from RX/TX

I also thought of S-Video port. It used 4 pins, low power, and is rarely used these day.

True, but this is unlikely since the device has nothing to do with audio.

I am also considering a din type of connector

https://www.ebay.co.uk/itm/Female-5-Pin-DIN-Plug-Panel-Mounted-Keyboard-Cable-Connector-Adapter-Y0F4-Q4Q1/282540023226?_trkparms=aid
%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160908105057%26meid%3Dd57742d8ce1f405b8c1aca3de96cd646%26pid%3D100675%26rk%3D1%26rkt%
3D15%26sd%3D282540023226&_trksid=p2481888.c100675.m4236&_trkparms=pageci%253A11fb4631-cd2a-11e7-9585-74dbd1809629%257Cparentrq%253Ad460a03315f0aadccbf68424fffaaffc%257Ciid%253A1